Bibliothèque

metro_daylight_intel

Metro daylight demand features, daily

Daily daylight-geometry features for 20 US/Canadian metros (15 US + 5 CA, keyed by ICAO airport code, joining 1:1 with metro_degree_days), 2025-01-01 to 2027-12-31 (21,900 day x metro rows), joinable to shop orders, payments, or leads by ISO date and metro. Computed with the NOAA solar-position equations from metro latitude/longitude in local IANA time: sunrise/sunset and civil twilight (HH:MM local), day_length_min, darkness_hours, evening_daylight_min (daylight after 17:00 local — the post-work shopping window), morning_daylight_min (before 09:00), is_dst and dst_transition flags, daylight_delta_min (day-length momentum vs the previous day), and daylight_demand_score (0-100 = round(100*(0.7*evening min-max + 0.3*day-length min-max)) per metro). Units: minutes, hours, HH:MM local, 0/1 flags, 0-100 score. Caveats: computed, not observed (NOAA approximate equations; no terrain/elevation effects); scores are relative within each metro, not comparable across metros; Phoenix observes no DST.

• daily
• daylight
• demand
• ml-features